#452 Smtube playlist support

[gymka]

Add function "download&play playlist". in linux shell code for that looks like("D75F5F5FD271FDED is my playlist ID):
$ curl -s http://gdata.youtube.com/feeds/api/playlists/D75F5F5FD271FDED | grep -o "http://www.youtube.com/watch?v=[^']*&feature=youtube_gdata_player">playlist.m3u
$ smplayer playlist.m3u

[Jan]

+1